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QR Challenge: Mole Conversions

Created using the ClassTools QR Treasure Hunt Generator

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Teacher Notes

A. Prior to the lesson:

1. Arrange students into groups. Each group needs at least ONE person who has a mobile device.

2. If their phone camera doesn't automatically detect and decode QR codes, ask students to

3. Print out the QR codes.

4. Cut them out and place them around your class / school.

B. The lesson:

1. Give each group a clipboard and a piece of paper so they can write down the decoded questions and their answers to them.

2. Explain to the students that the codes are hidden around the school. Each team will get ONE point for each question they correctly decode and copy down onto their sheet, and a further TWO points if they can then provide the correct answer and write this down underneath the question.

3. Away they go! The winner is the first team to return with the most correct answers in the time available. This could be within a lesson, or during a lunchbreak, or even over several days!

C. TIPS / OTHER IDEAS

4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.

Questions / Answers (teacher reference)

Question

Answer

1. You have 23 moles of Tantalum (Ta). How many grams is this?4161.9g Ta
2. You discover that the head of a match contains 1.6 grams of Sulfur. How many atoms of Sulfur does a match contain?3.0 X 10^22 atoms S
3. While cleaning a cut, you spill a bottle of Iodine. The label says that the bottle holds 500 grams of I. How many moles of I are there?3.94 mol I
4. Your silver watchband masses out at 326g. How many moles of Ag do you have?3.022 mol Ag
5. A gold coin contains 3.47 X 10^23 gold atoms. What is the mass of the coin in grams?113.5 g Au
6. If we put 3.68 X 10^29 atoms of mercury on a gram balance, what would the sample weigh in grams?1.23 X 10^8 g Hg
7. How many individual atoms are in a sample of xenon that has a mass of 38.54 grams?1.77 X 10^23 atoms Xe
8. Your toothpaste probably contains around 62g of fluorine per tube. How many atoms of fluorine are in one tube of toothpaste?1.965 X 10^24 atoms F
9. The head of a golf club might contain 250 grams of titanium. How many moles is this?5.22 mol Ti
10. The shaft of that same golf club probably contains around 35 moles of graphite, a natural form of pure carbon. How much might the shaft of the club weight in grams?420.4 g C
11. Find the mass in grams of 2.00 X 10^23 molecules of fluorine.6.3 g F
12. Find the mass, in grams, of 1.00 X 10^23 molecules of nitrogen.2.33 g N
13. How many particles are there in 1.43g of a molecular compound with a gram molecular mass of 233g?3.69 X 10^21 particles
14. How many moles of magnesium is 3.01 X 10^22 atoms of magnesium?0.05 moles
15. How many moles are in 1.20 X 10^25 atoms of phosphorus?19.93 moles
16. How many atoms are in 0.750 moles of Zinc?4.515 X 10^23
17. How many molecules are in 0.400 moles of dinitrogen pentoxide?2.408 X 10^23
18. How many molecules are in 5.5 moles of calcium?3.31 X 10^24
19. How many molecules are in 75.8 grams of silicon?1.62 X 10^24
20. How many grams are in 3,045 atoms of beryllium?4.55 X 10^-20

 


Mole Conversions: QR Challenge

https://www.classtools.net/QR/decode.php?text=You-have-23-moles-of-Tantalum-(Ta).-How-many-grams-is-this?

Question 1 (of 20)

 


Mole Conversions: QR Challenge

https://www.classtools.net/QR/decode.php?text=You-discover-that-the-head-of-a-match-contains-1.6-grams-of-Sulfur.-How-many-atoms-of-Sulfur-does-a-match-contain?

Question 2 (of 20)

 


Mole Conversions: QR Challenge

https://www.classtools.net/QR/decode.php?text=While-cleaning-a-cut,-you-spill-a-bottle-of-Iodine.-The-label-says-that-the-bottle-holds-500-grams-of-I.-How-many-moles-of-I-are-there?

Question 3 (of 20)

 


Mole Conversions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Your-silver-watchband-masses-out-at-326g.--How-many-moles-of-Ag-do-you-have?

Question 4 (of 20)

 


Mole Conversions: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-gold-coin-contains-3.47-X-10^23-gold-atoms.--What-is-the-mass-of-the-coin-in-grams?

Question 5 (of 20)

 


Mole Conversions: QR Challenge

https://www.classtools.net/QR/decode.php?text=If-we-put-3.68-X-10^29-atoms-of-mercury-on-a-gram-balance,-what-would-the-sample-weigh-in-grams?

Question 6 (of 20)

 


Mole Conversions: QR Challenge

https://www.classtools.net/QR/decode.php?text=How-many-individual-atoms-are-in-a-sample-of-xenon-that-has-a-mass-of-38.54-grams?

Question 7 (of 20)

 


Mole Conversions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Your-toothpaste-probably-contains-around-62g-of-fluorine-per-tube.--How-many-atoms-of-fluorine-are-in-one-tube-of-toothpaste?

Question 8 (of 20)

 


Mole Conversions: QR Challenge

https://www.classtools.net/QR/decode.php?text=The-head-of-a-golf-club-might-contain-250-grams-of-titanium.-How-many-moles-is-this?

Question 9 (of 20)

 


Mole Conversions: QR Challenge

https://www.classtools.net/QR/decode.php?text=The-shaft-of-that-same-golf-club-probably-contains-around-35-moles-of-graphite,-a-natural-form-of-pure-carbon.--How-much-might-the-shaft-of-the-club-weight-in-grams?

Question 10 (of 20)

 


Mole Conversions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find-the-mass-in-grams-of-2.00-X-10^23-molecules-of-fluorine.

Question 11 (of 20)

 


Mole Conversions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find-the-mass,-in-grams,-of-1.00-X-10^23-molecules-of-nitrogen.

Question 12 (of 20)

 


Mole Conversions: QR Challenge

https://www.classtools.net/QR/decode.php?text=How-many-particles-are-there-in-1.43g-of-a-molecular-compound-with-a-gram-molecular-mass-of-233g?

Question 13 (of 20)

 


Mole Conversions: QR Challenge

https://www.classtools.net/QR/decode.php?text=How-many-moles-of-magnesium-is-3.01-X-10^22-atoms-of-magnesium?

Question 14 (of 20)

 


Mole Conversions: QR Challenge

https://www.classtools.net/QR/decode.php?text=How-many-moles-are-in-1.20-X-10^25-atoms-of-phosphorus?

Question 15 (of 20)

 


Mole Conversions: QR Challenge

https://www.classtools.net/QR/decode.php?text=How-many-atoms-are-in-0.750-moles-of-Zinc?

Question 16 (of 20)

 


Mole Conversions: QR Challenge

https://www.classtools.net/QR/decode.php?text=How-many-molecules-are-in-0.400-moles-of-dinitrogen-pentoxide?

Question 17 (of 20)

 


Mole Conversions: QR Challenge

https://www.classtools.net/QR/decode.php?text=How-many-molecules-are-in-5.5-moles-of-calcium?

Question 18 (of 20)

 


Mole Conversions: QR Challenge

https://www.classtools.net/QR/decode.php?text=How-many-molecules-are-in-75.8-grams-of-silicon?

Question 19 (of 20)

 


Mole Conversions: QR Challenge

https://www.classtools.net/QR/decode.php?text=How-many-grams-are-in-3,045-atoms-of-beryllium?

Question 20 (of 20)